Scheduling services for multiple people

Hello,

I installed this plugin to help manage bookings for a fundraising event that I have planned. People have the option to choose from 3 different services. I set up the different services in the system, however, when one appointment is approved for a time slot, that time slot is no longer available for ANY of the 3 services, and not just that one service.

HELP!

Mary

https://ww.wp.xz.cn/plugins/appointment-calendar/